Sofa



FIG. 1 is a front perspective view of sofa showing our new design;

FIG. 2 is a front, left side perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a left side perspective view thereof; and,

FIG. 5 is a right side perspective view thereof. 

CLAIM The ornamental design for sofa, as shown and described. 